Attachment for sulky-plows.



G. S. CRAWFORD.

ATTACHMENT FOR SULKY FLOWS.

APPLICATION FILED MAY 16. 1917.

1 253 9&3 Patented J an. 15, 1918.

4/ 2 SHEETS-SHEET I- 0 %g 7 a f G. S. CRAWFORD.

ATTACHMENT FOR SULKY FLOWS.

APPLICATION FILED MAY 16, 19W.

Patented Jan.15,1918.

' 2 SHEETS-SHEET 2 lwu /nto'o & g9. flaw $725 ii /E.

GEORGE STEPHEN CRAWFORD, OF LA SALLE, COLORADO.

ATTACHMENT FOR SULKY-EELOWS.

Specification of Letters ,Patent.

Patented Jan. 15,1918.

Application filed. May 1c, 1917. Serial no. 169,019.

To all whom it may concern:

Be it known that I, GEORGE S. CRAWFORD, a, citizen of the United States,residing ,at La Salle, in the county of Weld, State of Colorado, haveinvented a. new and useful Attachment for Sulky-Plows; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to the art of sulkyplows, and particularly to animproved device or attachment, whereby either or both plows may beeasily put or forced into the soil or ground without the necessity ofconsiderable strength.

1t has been found difficult for weak or crippled persons to properlymanipulate sulky plows, whereby the plows proper may be forced or putinto the soil or ground efficiently.

Therefore, through necessity, a simple,

efficient and practical attachment has been devised, consisting of aWindlass, the winding drum of which is provided with a cable passingover a pulley and attached to the plow operating lever and arranged andconstructed in such wise, whereby the operator, upon simply rotating thedrum, may put or force the plow, well 1nto the soil or ground,

without wrenching or twisting the operators back.

In practical fields, the details of construction may necessitatealterations falling within the scope of what is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings Figure 1 is a view in side elevation ofa sulky plow,showing the improved attachment applied, and one of the plows loweredand the other raised.

Fig. 2 is a rear view, also showing one of the plows raised and theother lowered.

Fig. 3 is an enlarged detail perspective view of a portion of the yoke 1and the bars 33, showing the brace 43, the pulleys 35 and the cables 31.

Fig. 4 is a sectional view through one of the Windlass mechanisms, whichis carried by the frame of the sulky plow.

Fig. 5 is a detail perspective view of one of the levers 37, and itslooped member 10.

Referring more especially to the drawings,

ldesignates a yoke forming a part of the frame of the apparatus and 2designates two complemental crank axles pivotally connected at theiradjacent upper ends upon the bearing 3, and the outer end of each crankaxle has a wheel 4 journaled thereon.

crank arm 5 is clamped by means of the Levers 13 are fastened, one toeach crank axle, and a segment 11- is fastened to the frame and hasteeth upon its inner marginal edge adapted to be engaged by a pawlcarrled by the bar 15, which in turn is pivotally connected to an anglelever 16 and affords means whereby, when the pawl is released, thehandle 13 may be swung in order to cause one of the crank axles to rockin its pivotal bearings, and tilt either beam and its plow, as the casemay be.

The mechanism for causing either beam or both and their plows to beautomatically raised from the ground, in the event of an obstructionbeing struck by the plow points, or for any other reason, consists ofratchet wheels 17, which are fixed to the outer ends of the crank axles.A pawl 18 for engagement with the teeth of each ratchet wheel ispivotally connected to a yoke 19, which in turn is pivotally connectedby a link 20 with a lever 21 which is pivotally mounted upon a pivot pin22, and which yoke 19 is also pivotally connected to the link 15, whichin turn is pivoted to the angle lever 16 upon the lever 13. Any suitableor conventional means not shown, and which is disclaimed, may be used toretain the pawl 18 out of engagement with the ratchet 17. A tread crank23 is journaled in suitable bearings 24, fastened to the frame, and haspivotal connection with the lower end of a bar 25, which is pivoted atits upper end on the lever 21.

The mechanism for raising and lowering the plow beams and plows, asillustrated and as above described, is of the common constructionemployed in this type of sulky plow, and therefore, forms no part of thepresent invention, but to which applicants to rock with the crank andcause the beam 11 to be quickly thrown to a tilted position, as clearlyshown in Figs. 1 and 2.

It is to be noted that when either one of the beams 10 and 11 is raised,its corresponding operating lever is disposed in a forward position, andit has been found very difficult for weak or crippled operators to throwthe operating levers rearwardly, to replace, or force the plows down inthe son or ground hence, the improved device for accomplishing thispurpose has been devised, and which consists of the standards27 onoppositesides of the frame of the machine arranged in slightly forwardpositions. The upper ends of these standards carry shafts 28 havingcranks 29 and provided with drums 30. Stout cables 31 are attached to.and wound about the drum. Fixed in any suitable manner, adjacent theopposite sides of the yoke 1 (which forms a part of the frame of theapparatus), as shown at 32, are rearwardly extending bars 33, the rearends of which have eyes 3%, to which the pulleys 85 are connected. Theforks 86 of the levers 37 are pivoted at 38 to the upper ends of thelevers l3. Pivoted at 39 to the extremities of the forks 36 are loopedmembers or links 40, which are so constructed and arranged as to overlieand engage the angle levers 16. The cables 31, after having passed overthe pulleys 35, have their extremities connected at 41 to the upper endsof the forked levers 37.

Hence, it will be seen that when it is desired to replace or forceeither one or both of the plows into the soil or ground, one or both ofthe drums may be rotated in the direction of the arrow 42, therebywinding one of both of the cables, which will throw one or both of thelevers 13 rearwardly, and force either one or both of the plows into thesoil. When the levers 37 are rocked by pulling upon the cables, thelooped members 40 actuate the angle levers 16, to release the pawl(which is carried by the bar 15) from engagement with the teeth of theinner marginal edge of the segment 14:, whereby the.

levers may be rocked rearwardly. A V- shaped brace 43 is provided, andhas its arch secured at- 44: to the arch of the yoke 1, while the arms4:5,of the V-shaped brace have their extremities secured at 46 to therearwardly extending bars 83, for reinforcing the structure.

The invention having been set forth, what is claimed as new and usefulis In combination with a sulky plow having drop axles, plow beams havingplows at their rear ends carried by the drop axles, whereby as the axlesare rocked said beams may be tilted to elevate said plows, liftingleversfor rocking said axle, whereby the plows are elevated, windlassmechanisms mounted on the frame of the sulky plow forward of the liftinglevers, rearwardly extending bars mounted on the frame and havingpulleys at their rear ends rearwardly beyond-the lifting levers, cablesconnected to and wound about the drum of the wind- In testimony whereofI hare'signed my name to this specification in the presence of twosubscriblng witnesses.

. his GEORGE STEPHEN X CRAWFORD.

mark l Vitnesses 1 HERBERT H. DoBBs, CLAIR CRAWFORD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

